Variable capacity swash plate compressor

(19)

(11)

EP 0 853 199 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	29.09.1999 Bulletin 1999/39

(43)	Date of publication A2:
	15.07.1998 Bulletin 1998/29

(21)	Application number: 98300062.1

(22)	Date of filing: 06.01.1998

(51)	International Patent Classification (IPC)⁶: F04B 27/08

(84)	Designated Contracting States:
	AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

10.01.1997 JP 14666/97

(71)	Applicant: ZEXEL CORPORATION
	Tokyo (JP)

(72)	Inventor:
	Kazahaya, Yukio, c/o Zexel Corp. Kounan-works Kounan-machi, Oosato-gun, Saitama-ken (JP)

(74)	Representative: Britter, Keith Palmer
	Britter & Co. Barn West, The Dixies, High Street, Ashwell Baldock Hertfordshire SG7 5NT Baldock Hertfordshire SG7 5NT (GB)

(54)	Variable capacity swash plate compressor

(57) A swash plate (10) of a variable capacity swash plate compressor has a front-side sliding surface (10c) and a rear-side sliding surface (10a). Pairs of substantially hemispherical shoes (50) are each capable of performing relative rotation on the front-side and rear-side sliding surfaces (10c, 10a) of the swash plate (10), respectively, with respect to the circumference of the swash plate (10) as a drive shaft (5) rotates. A plurality of pistons (7) each have one end (7a) thereof formed therein with a pair of concave support portions (51a, 51b) for each slidably supporting the corresponding shoe (50). At least one of the front-side and rear-side sliding surfaces (10c, 10a) of the swash plate (10) has a mounting recess (70) formed at an outer peripheral portion thereof, which outer peripheral portion receives no load which acts on the at least one of the front-side and rear-side sliding surfaces (10c, 10a) of the swash plate (10). The mounting recess (70) is used for assembling each pair of shoes (50) with the swash plate (10) and the pair of concave support portions (51a, 51b) at the one end (7a) of a corresponding one of the pistons (7). The mounting recess (70) has a recess (70a) for placing one shoe (50) of each pair of shoes (50) therein and a guide face (70b) for guiding the one shoe (50) on to a corresponding one of the at least one of the front-side and rear-side sliding surfaces (10c, 10a) of the swash plate (10).

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